const wx2my = require('../../wx2my');

/**
 * author: Di (微信小程序开发工程师)
 * organization: WeAppDev(微信小程序开发论坛)(http://weappdev.com)
 *               垂直微信小程序开发交流社区
 * 
 * github地址: https://github.com/icindy/wxParse
 * 
 * for: 微信小程序富文本解析
 * detail : http://weappdev.com/t/wxparse-alpha0-1-html-markdown/184
 */

/**
 * utils函数引入
 **/
import showdown from './showdown.js';
import HtmlToJson from './html2json.js';
/**
 * 配置及公有属性
 **/

var realWindowWidth = 0;
var realWindowHeight = 0;
wx2my.getSystemInfo({
  success: function (res) {
    realWindowWidth = res.windowWidth;
    realWindowHeight = res.windowHeight;
  }
});
/**
 * 主函数入口区
 **/

function wxParse(bindName = 'wxParseData', type = 'html', data = '<div class="color:red;">数据不能为空</div>', target, imagePadding) {
  var that = target;
  var transData = {}; //存放转化后的数据

  if (type == 'html') {
    transData = HtmlToJson.html2json(data, bindName);
  } else if (type == 'md' || type == 'markdown') {
    var converter = new showdown.Converter();
    var html = converter.makeHtml(data);
    transData = HtmlToJson.html2json(html, bindName);
    console.log(JSON.stringify(transData, ' ', ' '));
  }

  transData.view = {};
  transData.view.imagePadding = 0;

  if (typeof imagePadding != 'undefined') {
    transData.view.imagePadding = imagePadding;
  }

  var bindData = {};
  bindData[bindName] = transData;
  that.setData(bindData);
  that.wxParseImgLoad = wxParseImgLoad;
  that.wxParseImgTap = wxParseImgTap;
} // 图片点击事件


function wxParseImgTap(e) {
  var that = this;
  var nowImgUrl = e.target.dataset.src;
  var tagFrom = e.target.dataset.from;

  if (typeof tagFrom != 'undefined' && tagFrom.length > 0) {
    wx2my.previewImage({
      current: nowImgUrl,
      // 当前显示图片的http链接
      urls: that.data[tagFrom].imageUrls // 需要预览的图片http链接列表

    });
  }
}
/**
 * 图片视觉宽高计算函数区 
 **/


function wxParseImgLoad(e) {
  var that = this;
  var tagFrom = e.target.dataset.from;
  var idx = e.target.dataset.idx;

  if (typeof tagFrom != 'undefined' && tagFrom.length > 0) {
    calMoreImageInfo(e, idx, that, tagFrom);
  }
} // 假循环获取计算图片视觉最佳宽高


function calMoreImageInfo(e, idx, that, bindName) {
  var temData = that.data[bindName];

  if (!temData || temData.images.length == 0) {
    return;
  }

  var temImages = temData.images; //因为无法获取view宽度 需要自定义padding进行计算，稍后处理

  var recal = wxAutoImageCal(e.detail.width, e.detail.height, that, bindName); // temImages[idx].width = recal.imageWidth;
  // temImages[idx].height = recal.imageheight; 
  // temData.images = temImages;
  // var bindData = {};
  // bindData[bindName] = temData;
  // that.setData(bindData);

  var index = temImages[idx].index;
  var key = `${bindName}`;

  for (var i of index.split('.')) key += `.nodes[${i}]`;

  var keyW = key + '.width';
  var keyH = key + '.height';
  that.setData({
    [keyW]: recal.imageWidth,
    [keyH]: recal.imageheight
  });
} // 计算视觉优先的图片宽高


function wxAutoImageCal(originalWidth, originalHeight, that, bindName) {
  //获取图片的原始长宽
  var windowWidth = 0,
      windowHeight = 0;
  var autoWidth = 0,
      autoHeight = 0;
  var results = {};
  var padding = that.data[bindName].view.imagePadding;
  windowWidth = realWindowWidth - 2 * padding;
  windowHeight = realWindowHeight; //判断按照那种方式进行缩放
  // console.log("windowWidth" + windowWidth);

  if (originalWidth > windowWidth) {
    //在图片width大于手机屏幕width时候
    autoWidth = windowWidth; // console.log("autoWidth" + autoWidth);

    autoHeight = autoWidth * originalHeight / originalWidth; // console.log("autoHeight" + autoHeight);

    results.imageWidth = autoWidth;
    results.imageheight = autoHeight;
  } else {
    //否则展示原来的数据
    results.imageWidth = originalWidth;
    results.imageheight = originalHeight;
  }

  return results;
}

function wxParseTemArray(temArrayName, bindNameReg, total, that) {
  var array = [];
  var temData = that.data;
  var obj = null;

  for (var i = 0; i < total; i++) {
    var simArr = temData[bindNameReg + i].nodes;
    array.push(simArr);
  }

  temArrayName = temArrayName || 'wxParseTemArray';
  obj = JSON.parse('{"' + temArrayName + '":""}');
  obj[temArrayName] = array;
  that.setData(obj);
}
/**
 * 配置emojis
 * 
 */


function emojisInit(reg = '', baseSrc = "/wxParse/emojis/", emojis) {
  HtmlToJson.emojisInit(reg, baseSrc, emojis);
}

module.exports = {
  wxParse: wxParse,
  wxParseTemArray: wxParseTemArray,
  emojisInit: emojisInit
};